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Investigating the use of a hybrid plasmonic-photonic nanoresonator for optical trapping using finite-difference time-domain method

Mossayebi, M.; Wright, A.J.; Parini, A.; Somekh, M.G.; Bellanca, G.; Larkins, E.C.

Investigating the use of a hybrid plasmonic-photonic nanoresonator for optical trapping using finite-difference time-domain method Thumbnail


Authors

M. Mossayebi

A. Parini

G. Bellanca



Abstract

We investigate the use of a hybrid nanoresonator comprising a photonic crystal (PhC) cavity coupled to a plasmonic bowtie nanoantenna (BNA) for the optical trapping of nanoparticles in water. Using finite-difference time-domain simulations, we show that this structure can confine light to an extremely small volume of ∼30,000nm3(∼30 zl) in the BNA gap whilst maintaining a high quality factor (5400–7700). The optical intensity inside the BNA gap is enhanced by a factor larger than 40 compared to when the BNA is not present above the PhC cavity. Such a device has potential applications in optical manipulation, creating high precision optical traps with an intensity gradient over a distance much smaller than the diffraction limit, potentially allowing objects to be confined to much smaller volumes and making it ideal for optical trapping of Rayleigh particles (particles much smaller than the wavelength of light).

Citation

Mossayebi, M., Wright, A., Parini, A., Somekh, M., Bellanca, G., & Larkins, E. (2016). Investigating the use of a hybrid plasmonic-photonic nanoresonator for optical trapping using finite-difference time-domain method. Optical and Quantum Electronics, 48(5), Article 275. https://doi.org/10.1007/s11082-016-0539-5

Journal Article Type Article
Acceptance Date Mar 22, 2016
Online Publication Date Apr 8, 2016
Publication Date May 1, 2016
Deposit Date Jul 27, 2018
Publicly Available Date Jan 14, 2019
Print ISSN 0306-8919
Publisher BMC
Peer Reviewed Peer Reviewed
Volume 48
Issue 5
Article Number 275
DOI https://doi.org/10.1007/s11082-016-0539-5
Public URL https://nottingham-repository.worktribe.com/output/1115570
Publisher URL https://link.springer.com/article/10.1007%2Fs11082-016-0539-5
PMID 00037553

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